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      <title>5种神器解决SpringBoot公共字段填充 - 交互式测验</title>
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      <div class="main-wrapper">
          <div class="quiz-container">
            <div class="quiz-header">
              <h1>5种神器解决SpringBoot公共字段填充 - 交互式测验</h1>
              <p>检验你对文档内容的理解程度</p>
            </div>
            <div id="quiz-content">
                <div class="quiz-body">
                    <div class="progress-bar">
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      <script>
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  {
    "question": "根据文档，与AOP、JPA监听器等自动化方案相比，“传统手动填充法”最主要的风险是什么？",
    "options": [
      "导致严重的性能瓶颈，因为每次都需要手动调用方法。",
      "代码逻辑复杂，难以进行单元测试。",
      "容易被开发人员遗漏，从而引发生产环境的数据不一致问题。",
      "与现代的ORM框架（如MyBatis-Plus, JPA）不兼容。"
    ],
    "correctAnswerIndex": 2,
    "explanation": "文档明确指出，手动设置最大的问题是容易遗漏。新团队成员可能不了解“潜规则”，导致忘记设置字段，最终造成大量数据不一致。相比之下，它的性能反而是最好的，因为它没有额外的反射或代理开销。",
    "source": "文档中「一、传统手动填充法及其痛点」->「容易遗漏导致的数据不一致问题」部分",
    "hint": "文档中提到一个案例，由于此问题导致数据库中约30%的记录缺少关键时间字段。"
  },
  {
    "question": "在使用MyBatis-Plus的自动填充方案时，需要实现哪个核心接口，并在实体字段上使用哪个注解来标记需要填充？",
    "options": [
      "实现 `AuditorAware` 接口，并使用 `@CreatedBy` 注解。",
      "实现 `MetaObjectHandler` 接口，并使用 `@TableField(fill = ...)` 注解。",
      "实现 `Interceptor` 接口，并使用 `@Column(updatable = false)` 注解。",
      "实现 `EntityListener` 接口，并使用 `@PrePersist` 注解。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "MyBatis-Plus的自动填充机制依赖于两个关键部分：1. 实现 `MetaObjectHandler` 接口，在其中的 `insertFill` 和 `updateFill` 方法中定义填充逻辑。2. 在实体类的字段上使用 `@TableField` 注解，并通过 `fill` 属性（如 `FieldFill.INSERT`）来指定填充时机。",
    "source": "文档中「二、MyBatis-Plus自动填充神器」->「MetaObjectHandler接口介绍」和「配置需要自动填充的字段」部分",
    "hint": "文档中介绍了一个“神器”，它包含一个定义填充逻辑的处理器接口和一个用于标记字段的注解。"
  },
  {
    "question": "文档中提到的JPA实体监听器方案，是如何获取当前操作用户的用户名以填充 `createBy` 或 `updateBy` 字段的？",
    "options": [
      "通过在 `@EntityListeners` 注解中直接传入用户名。",
      "实现 `AuditorAware<String>` 接口，并将其注册为一个Spring Bean，通过它来提供当前用户信息。",
      "在 `AuditingEntityListener` 类中硬编码一个默认的系统用户名。",
      "通过AOP切面拦截Controller层请求，并将用户信息存入ThreadLocal。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "Spring Data JPA通过 `AuditorAware<T>` 接口来解耦用户信息的获取。开发者需要提供一个该接口的实现，并将其注册为Bean。当JPA的 `AuditingEntityListener` 需要填充 `@CreatedBy` 或 `@LastModifiedBy` 字段时，就会调用这个Bean的 `getCurrentAuditor()` 方法来获取当前用户。",
    "source": "文档中「五、JPA实体监听器方案」->「用户相关字段的填充」部分",
    "hint": "该方案需要一个专门的接口实现来回答 “当前审计员是谁？” 这个问题。"
  },
  {
    "question": "根据文档中的性能基准测试对比，哪种公共字段填充方案的性能开销最大，表现相对最差？",
    "options": [
      "手动填充方案",
      "MyBatis-Plus自动填充方案",
      "AOP切面方案",
      "Hibernate拦截器方案"
    ],
    "correctAnswerIndex": 2,
    "explanation": "文档的「性能对比与基准测试」部分明确指出，AOP切面方案性能较差。在一个处理10000条记录的插入操作基准测试中，AOP方案比手动填充和MyBatis-Plus慢了大约20%，主要是由于其代理和反射机制带来的开销。",
    "source": "文档中「六、五种方案的综合对比与选型指南」->「性能对比与基准测试」部分",
    "hint": "文档提到，这种方案由于其代理和反射机制，在处理大量实体时会产生较大开销。"
  },
  {
    "question": "如果一个项目同时使用了多种ORM框架（例如，部分模块用JPA，部分用MyBatis），文档建议哪种方案可能是唯一可行的统一解决方案？",
    "options": [
      "JPA实体监听器方案",
      "Hibernate拦截器方案",
      "AOP切面方案",
      "MyBatis-Plus自动填充方案"
    ],
    "correctAnswerIndex": 2,
    "explanation": "AOP切面方案的优势在于其全局性和非侵入性。它作用于Service层或更高层面，与底层的ORM框架无关。因此，在需要统一处理多种数据访问技术的混合环境中，AOP是实现公共字段填充逻辑的理想选择。",
    "source": "文档中「六、五种方案的综合对比与选型指南」->「不同业务场景下的选择」部分",
    "hint": "思考哪种方案不依赖于特定的ORM框架，而是作用于更通用的代码层级（如Service层方法）。"
  },
  {
    "question": "在Hibernate拦截器方案中，文档里的代码示例是如何精确识别哪些实体需要被自动填充的？",
    "options": [
      "通过检查实体类名是否以 'Auditable' 结尾。",
      "拦截器会自动处理所有被Hibernate管理的实体对象。",
      "通过检查实体对象是否实现了特定的标记接口（如 `Auditable`）。",
      "通过在实体的基类中添加 `@Audited` 注解。"
    ],
    "correctAnswerIndex": 2,
    "explanation": "文档中的 `AuditInterceptor` 示例代码，在 `onSave` 和 `onFlushDirty` 方法的一开始就进行了判断：`if (entity instanceof Auditable)`。这表明，只有实现了 `Auditable` 这个标记接口的实体类，才会被后续的字段填充逻辑处理，这是一种精确控制作用范围的设计。",
    "source": "文档中「三、Hibernate Interceptor拦截器方案」->「自定义Interceptor实现字段填充」部分",
    "hint": "在拦截器的代码实现中，使用了一个 `instanceof` 关键字来判断实体是否属于特定类型。"
  },
  {
    "question": "在使用MyBatis-Plus时，如果希望某个字段（如 `last_login_time`）在插入和更新时都能被自动填充，应该使用哪个 `FieldFill` 枚举值？",
    "options": [
      "FieldFill.DEFAULT",
      "FieldFill.UPDATE",
      "FieldFill.INSERT",
      "FieldFill.INSERT_UPDATE"
    ],
    "correctAnswerIndex": 3,
    "explanation": "文档在介绍MyBatis-Plus的 `@TableField` 注解时，清晰地说明了 `FieldFill` 枚举的三个主要值：`FieldFill.INSERT` 表示只在插入时填充，`FieldFill.UPDATE` 表示只在更新时填充，而 `FieldFill.INSERT_UPDATE` 则表示两种操作都会触发填充。",
    "source": "文档中「二、MyBatis-Plus自动填充神器」->「配置需要自动填充的字段」部分",
    "hint": "MyBatis-Plus提供了一个枚举值，可以同时覆盖实体生命周期中的两个主要写操作。"
  }
];
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            const answeredCount = userAnswers.filter(a => a !== null).length;
            const wrongCount = answeredCount - correctCount;
            const skippedCount = totalQuestions - answeredCount;
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            const errorRate = totalQuestions > 0 ? Math.round((wrongCount / totalQuestions) * 100) : 0;

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                '<p>' + correctCount + ' / ' + totalQuestions + '</p>' +
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                '<div class="score-card">' +
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                '<div class="score-card">' +
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                '<div class="score-card score-details">' +
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                '<tr><td>错误</td><td>' + wrongCount + '</td></tr>' +
                '<tr><td>未答</td><td>' + skippedCount + '</td></tr>' +
                '</table>' +
                '</div>' +
                '</div>' +
                '<div class="report-actions">' +
                '<button id="review-btn">回顾测验</button>' +
                '<button class="primary" onclick="location.reload()">再试一次</button>' +
                '</div>' +
                '</div>';

            let reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }
            quizContentEl.insertAdjacentHTML('beforeend', finalScoreHtml);
            document.getElementById('review-btn').addEventListener('click', reviewQuiz);
        }

        function reviewQuiz() {
            const reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }

            document.querySelector('.quiz-body').style.display = 'block';
            document.getElementById('quiz-footer').style.display = 'flex';
            
            currentQuestionIndex = 0;
            loadQuestion();
            updateNavigationButtons(); // Ensure nav buttons are correctly displayed
        }

        // Event Delegation for options
        optionsListEl.addEventListener('click', (event) => {
            if (event.target && event.target.matches('li.option-item')) {
                // Check if the question has already been answered
                if (userAnswers[currentQuestionIndex] === null) {
                    const selectedIndex = parseInt(event.target.dataset.index, 10);
                    selectOption(selectedIndex);
                }
            }
        });

        prevBtn.addEventListener('click', goToPreviousQuestion);
        nextBtn.addEventListener('click', goToNextQuestion);
        hintBtn.addEventListener('click', showHint);
        
        // 初始加载
        loadQuestion();
      </script>
    </body>
    </html>
  